Any for the questions will be great

1) The mass of the skier, m = 51.02 kg

2) At top of the hill, v = 0

3) The velocity of the skier at the 30 m height, v = 37.04 m/s

4)  The velocity of the skier at the bottom of the hill, v = 44.27 m/s

Explanation:

Given data,

The initial height of the skier from the ground, h = 100 m

The K.E of skier at 100 m = 0 J

The P.E of the skier at 100 m = 50,000 J

1) The mass of the skier,

                          m = P.E/ gh

                              = 50,000/ (9,8 x 100)

                              = 51.02 kg

2) The velocity of the skier at the top of the hill,

At top of the hill, the K.E = 0,

Hence,

                             v = 0

3) The velocity of the skier at the 30 m height,

                            P.E = mgh

                                  = 51.02 x 9.8 x 30

                                   = 14,999.88 J

                            E = P.E + K.E

                            K.E = E - P.E

                                   = 50,000 - 14,999.88

                                    = 35000.12 J

                              v = √(2 K.E/m)

                                 = √(2 x 35000.12 / 51.02)

                              v = 37.04 m/s

4) The velocity of the skier at the bottom of the hill,

At bottom of the hill, P.E = 0 and K.E is maximum

                                  K.E = 50,000 J

                                  v = √(2 K.E/m)

                                     = √(2 x 50000 / 51.02)

                                  v = 44.27 m/s

all of the answers are correct.

falsification is manipulating research materials, equipment, or processes or changing or omitting data or results such that the research is not accurately represented in the research record. plagiarism is the appropriation of another person's ideas, processes, results, or words without giving appropriate credit.

explanation:

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